Tube



FIG. 1 is a perspective view of the tube embodying the new design;

FIG. 2 is a front elevational view thereof, the rear elevational viewbeing the mirror image thereof;

FIG. 3 is a left side elevational view thereof, the right sideelevational view being the mirror image thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The ornamental design for tube, as shown and described.